饮食碳水化合物影响短期热适应的性能结果
Paul Rosbrook1, David P Looney2, Lee M Margolis3
1Center for Research & Education in Special Environments, University at Buffalo, Buffalo, NY.
Medicine and science in sports and exercise
|April 18, 2025
概括
高碳水化合物饮食改善了3.22公里的跑步时间试验在热度适应热度 (HA) 后的热度中的表现. 碳水化合物摄入不足可能会损害在热应激下强烈运动后的表现.
科学领域:
- 运动生理学 运动生理学
- 运动营养 运动营养
- 环境生理学环境生理学
背景情况:
- 热适应 (HA) 协议涉及高强度运动可能会损害随后的时间试验 (TT) 在炎热条件下的表现.
- 营养策略,特别是碳水化合物 (CHO) 摄入量,在缓解这些性能下降方面的作用尚未完全理解.
研究的目的:
- 为了调查高碳水化合物 (HC) 饮食是否可以提高3.22公里运行TT在短时间,强度炼的HA协议之后,在炎热的情况下的表现.
- 为了比较HC饮食与低碳水化合物 (COMP) 饮食对HA后表现的影响.
主要方法:
- 14名健康的男性接受了为期6天的HA协议.
- 参与者被分配到HC饮食 (70%卡路里CHO) 或COMP饮食 (35%卡路里CHO) 在HA期间和之后的一周.
- 在高温中运行TT的性能在HA后的一天和五天被评估.
主要成果:
- 两组都表现出成功的热度适应,体现出生理变化,如心率降低和温度降低.
- HC组在HA后一天 (p=0.02) 与COMP组相比显示出明显更快的TT表现.
- HC组在HA后的一天和五天 (p≤0.01) 与基线相比,TT表现有较大的改善.
结论:
- 高碳水化合物饮食可以在短期,运动密集的热度适应后,在炎热的情况下提高跑步表现.
- 在热应激中进行艰苦的运动时,碳水化合物供应不足可能会对适应后的表现产生负面影响.
- 优化碳水化合物摄入对于经历热度适应和在炎热环境中表现的运动员至关重要.
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